Carbureter.



J. M. EVANS.

CARBURETER.

APPLICATION min ocr. l2. 19m.

Illllmlll llllllllll lmllllllr M u W Ilm A 4EMIELA 444/ w IH N Patented; my 3,1m

2 SHEETS-SHEET l.

.L EVANS.

CARBUHETER.

APPLICATION FILED OCLTZ. I9I4.

Patented July 3, 1917'n 2 SHEETS-SHEET 2.

E sTATns ANT 'IAIVIES IVI. EVANS, OIF WESTPORT, CONNECTICUT, ASSIGNOR T0 EVANS ENGINE COM- PANY, INCORPORATED, A CORPORATION OF NEW YORK.`

CARBURETER.

To all whom t may concern.'

Be it known that I, JAMES EvANs,ka citizen of the United States, and a resident of "Westport, in the county ofy Fairfield, State of Connecticut, have invented certain new` and useful Improvements in Carbureters,'of which the following is a description.

My invention relates to a method for introducing a regulated quantity of liquid fuel or other liquid into air or other gases, and for mixing such liquid, finely separated or vaporized, with such air or other gases in proper proportions; and the vobject of my invention is to provide a device whereby a regulated, constant and controllable quantity of the liquid will be supplied to the air or other gas and mixed in the prop ortions best adapted to the purpose for which such mixture is intended to be usedwhether for explosion in internal combustion engines, or. other engines, apparatus or contrivances for generating power, or for enriching gases for illuminating, heating or other purposes, or for obtaining a mixture of any liquid, finely separated or vaporized,

with any gas for any purpose for which such an admixture of liquid and gas may be desired. t I

Among the many purposes for which this device is adapted for use is theproduction of an explosive gas for the operation of internal combustion engines through the mixing of a liquid fuel such as gasolene, kero-v sene, alcohol or any other volatile iiuid hy- -drocarbon with atmospheric air in the proper portions for explosion in such en gine; and I shall describe the operation of my device with such an engine, but itsfuse is by no means limited to such engineshalthough 4the general -method of' operation. with respect to other uses is similar to that about to be described.

In the drawing accompanying and f orming a part of this specification, Ihave illustrated two preferred constructions, one on the reciprocating principle, and the other upon the rotary principle, both embodying my invention and the construction, operation and advantages of my improved device will readily be understood from an explanation of these drawings. Referring to the drawings:

Figure l is a side elevation partly in secspecification of Letters ratet.

Patented July 3, 191'?.

Application led October 12, 191'4. Serial No. 866,276.

device constructed and arranged to operate p on the rotary principle.

Figs. 6 and 7 are sectional views of the device shown in Fig. 5, showing the device in two operative positions.

Figs. 8 and 9 are detail views.

Referring in detail to the apparatus shown in Figs. 1 to 4 of the drawing, which apparatus is shown in a vertical position `but may be in any position, the numeral l designates the mixing chamber for mixing the liquid fuel and air, and when the device is used with an internal combustion engine this chamber may be a part of th'e intake pipeor manifold of the engine. The air passes through this chamber and charges of the liquid fuel are delivered into it periodically as may be required. A liquid fuel reservoir or chamber 2 is located adjacent the mixing chamber and is supplied with liquid through the pipe 4. 'llhe pressure or head on the liquid should be such as not only to fill the chamber 2, but preferably to keep the liquid therein under slight pressure. The numeral 3 designates a passage leading from the fuel reservoir 2 to' the mixing chamber 1. The numeral 5 designates a reciprocating plunger or carrier for the liquid adapted to slide in the passage 3 connecting the fuel chamber and the mixing chamber. This plunger or carrier is made in two parts, viz: an inner plungery element having a stem 6 and and enlarged head 7 and an outer plunger element 8 mounted as a sleeve on the stem 6 of the inner element and of the same section as the head 7. rIhe inner faces of the element 8 and of the head 7 are so shaped as to come in contact when brought together, and are preferably perpendicular to the ma- ]or axes of the element 8 and of the head 7. The stem 6 fits snugly in and moves freely through the outer element 8 and is preferably of a circular section, but may be of any section. The head 7 and the outer element 8 are preferably of circular section and cylindrical in form, but may be of any section. Both the head 7 and the outer element 8 fit snugly in and slide through the passage 3. The length of the passage 3 is greater than the maximum distance between the faces of the head 7 and the outer element 8 when in the cycle of operation.

The two plunger elements 6 7 and 8 are independently controlled by cams or `other suitable mechanism. The cam mechanism illustrated consists of a cam wheel 10, cam grooves l1 and 12, and rocker arms 13 and 14. The cam wheel 10 may be mounted on and driven by any engine withwhich the mixing device is associated; or, if the device is not used in connection with an engine, then any suitable driving motor may be employed. The shape of the cam grooves 11 and 12 is such that the whole plungerA 5 6 7 8 will slide back and forth, and at the proper part of the stroke the two elements forming the plunger, viz: 6 7 and 8 will have an independent movement with relation to each other.

The numeral 15 designates the space between the head 7 and the outer element 8 at the beginning of the cycle of operation. The arrangement is such that the liquid is received in the space or recess 15 and is carried or conveyed in this recess through the passage 3 and into the mixing chamber 1, as illustrated in Fig. 2. This is effected by the cam mechanism and rocker arms raising both plunger elements 6 7 and 8 from the position shown in Fig. 1 to the position shown in Fig. 2, the interval between the face of the head 7 and the face of the outer element 8 remaining the same. As the next step in the cycle of operation, the outer plunger element 8 descends or closes rapidly upon the head 7, thereby forcibly ejecting and spraying into the mixing chamber 1 the liquid, or such of it as remains in the recess. This brings the plunger elements intothe position shown at Fig. 3.

In the next step of the cycle of operation the two elements 6 7 and 8 move together with the recess closed to the position shown in Fig. 4T' 'Then the plunger element 6 7 descends until the desired interval between the face of the head 7 and the outer element 8 is attained, whereupon the liquid flows or is forced into the space or recess 15 and the cycle of operation is repeated.

The impact of the element 8 upon the element 7 may also be accomplished by means of a spring instead of by a cam and may also be accomplished (by any other suitable mechanism. The rapid closing of the recess and the resulting sudden impact upon the element 8 of the element 7 is essential to best results, and any mechanism employed should be capable of effecting this. This rapid closing of the recess and the sudden impact of one element on the other not only ejects the fuel, but sprays, vaporizes and disperses it, thereby insuring not only the nates the mixing chamber.

delivery into the mixing chamber of the proper quantity of fuel, but also the vaporization and mixing of each individual harge with air passing through the cham- Referring now to the modified arrangement adapted to operate on the rotary principle, shown in Figs. 5 to 9, inclusive, thc numeral 16 designates the liquid reservoir to which liquid is supplied through the pipe 17 and maintained preferably under slight head or pressure. The numeral 18 deslg- The carrier of liquid from the reservoir to the mixing chamber comprises two plates 19 and 22 mounted on the shaft 20 and adapted to rotate between the fixed plates 24; and 25. The plate 19 is provided with a flange 21 located on the face of the plate and extending slightly less than half around the plate. The plate 22 is also provided with a Hange 23 and thisflange is also located on the face of the plate and extends slightly less than half around the same. When assembled, the flanges 21 and 23 each overhang the outer edge of the oppositely disposed plate and the two plates form a smooth disk, except for the recesses at the ends of the flanges. Means are provided to move the two plates with respect to each other as they rotate on the shaft 20, in order that the adjacent ends of the flanges 21 and 23 may be made to move away from cach other in the liquid reservoir thereby forming a recess into which the liquid flows or is forced and then to hold this relative position until the charge has been brought into the mixing chamber where the ends of the flanges approach each other and forcibly eject the charge. To this end a bell-crank 26 is lprovided and disposed in a recess 27 in the plate 22. This bell-crank isprovided with three arms. One of these, 28, is pivotally secured to the disk 19, and another, 29, is pivotally secured to the disk 22, while the remaining arm 30 is provided with a projection 31, adapted to move in the cani groove 32, formed in the fixed plate 25, as the bell crank as a whole rotates with the disk. The cam groove 32 is so shaped that as the shaft 20 rotates and the adjacent ends 33 and 34 of the flanges 21 and 23 approach and enter the liquid reservoir, the plate 22 will move ahead of theA plate 19, and the ends 33 and 34 of the flanges will separate and form a recess as shown at 35 in Fig. 7, and the impact of the flange 21 upon the flange 23 may also be accomplished by means of a spring instead of by a cam and may also be accomplished by any other suitable mechanism. The liquid will be drawn or forced into the recess and will be carried around in the same until the liquid is in the mixing chamber 18. The cam groove will then act through the bell-crank and bring the ends togethers therebyforcibly ejecting and spraying the liquid. In the continuedl rotation of the shaft 20, the recess is again opened in the reservoir, and the above cycle of operation is repeated. In the particular arrangement described, there are two sets of flange ends on each disk and the arrangement is such that when one set of 7 ends approaches in the mixing chamber and closes the recess so as to eject and spray the liquid, the oppositely-disposed ends of the flanges separate and form a recess in the liquid reservoir which is filled with a charge of fuel.

lFrom the foregoing description, it will be seen that'the operation of the` device conv structed on the rotary principle is in general the same as that of the device constructed on the reciprocating.princlple above described. Each device comprises a reservoir for liquid,

a mixing chamber, and a mechanical carrier.

or conveyer adapted to receive measured charges in'the reservoir and to convey them to and. forcibly eject, spray and disperse them in the mixing chamber.

lt will be observed that in the operation of my device constructed on both the reciprocating and the rotary principles, the carrier is submerged in the liquid with its two component parts in closed relation. They then open, forming a recess of definite size into which a uniform and definite quan` action incident to the use of pumps with valves, and to jet carbureters, which depend on suction or on partial ,vacuum for their operation. It is also independent "of atmospheric pressure l and does notrequireV regulation because v,of changes of atmospheric` pressure. v

provements which are specific to the device constructed on the rotary principle and shown in Figs. 6 to 9 inclusive. Clalmsspeciic to this device are made in a divisiona application Serial No. 16,338.

Neither do lI claim in this application the l f method of carburization yof air. described herein, which consists in vaporizing the individual charges'of liquid by subjecting them to an impact or blow,.such method being claimed in my pending application Serial No. 73,090. I

While I have described only two embodiments f my invention, `ll am aware that many modilications maybe made by those y skilled in the art without departing from the scope of my claims. What I claim is: f ln combination with a device of the kind described, a reservoir chamber for liquid, a

I do not claim in this applicaanthe imchamber through which a current of air may v be induced, a passage connecting the two chambers, a liquid fuel carrier adapted to move through said passage comprising two relatively movable members, and a cam operated means for moving each of said mem- -bers positively and independently of the other to cause them to' convey charges of liquid fuel from the reservoir `chamber and eject said charges into the other chamber, all for the'purpose described. f JAMES M. EVANS. v Witnesses: WnL'rER S. JONES, M. S. MAGINTYRE. 

